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[Xen-devel] Re: [PATCH v6] xen pci backend driver.



On Wed, 20 Apr 2011 17:07:19 -0400
Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:

> The following patch implements the Xen pci backend for upstream Linux.
> This is the host side counterpart to the frontend driver in
> drivers/pci/xen-pcifront.c. The PV protocol is also implemented by
> frontend drivers in other OSes too, such as the BSDs.
> 
> This driver has a long history as an out of tree driver but I am
> submitting it here as a single monolithic patch to aid review. Once it
> has been reviewed and is considered suitable for merging can we perhaps
> consider merging the equivalent git branch which maintains much of
> history?

It looks pretty clean at first glance (though 128k worth of patch isn't
an ideal way to split it).

But maybe the back end belongs in arch/x86/xen as it's really a arch
specific PCI implementation at heart?  I don't want to be a bottleneck
for any Xen specific PCI patches in the future, and other arches have a
similar split (though not always with an ideal core vs arch split).

Figuring out some way to preserve the git history is probably a good
idea, assuming it's not too much of a mess.  If it is, a more
reasonable split and history using rebase could probably be contrived
before merging it.

-- 
Jesse Barnes, Intel Open Source Technology Center

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